Bài `4`
`a ) 2^2 = 2 . 2 = 4`
`2^3 = 2 . 2 . 2 = 8`
`2^4 = 2 . 2 . 2 . 2 = 16`
`2^5 = 2 . 2 .2 .2 .2 = 32`
`2^6 = 2 .2 . 2.2.2.2 = 64`
`2^7 = 2.2.2.2.2.2.2 = 128`
`2^8 = 2.2.2.2.2.2.2.2 = 256`
`2^9 = 2.2.2.2.2.2.2.2.2 = 512`
`2^10 = 2.2.2.2.2.2.2.2.2.2 = 1024`
`b ) 3^2 = 3.3 = 9`
`3^3 = 3.3.3 = 27`
`3^4 = 3 .3.3.3 = 81`
`3^5 = 3.3.3.3.3 = 243`
`c ) 4^2 = 4.4 = 16`
`4^3 = 4.4.4 = 64`
`4^4 = 4.4.4 = 156`
`d ) 5^2 = 5.5 = 25`
`5^3 = 5.5.5 = 125`
`5^4 = 5.5.5.5 = 625`
Bài `5`
`a ) 4^9 : 4^4 = 4^(9 - 4) = 4^5`
`17^8 : 17^5 = 17^(8 - 5) = 17^3`
`2^10 : 8^2 = 2^10 : 2^6 = 2^(10 - 6) = 2^4`
`18^10 : 3^10 = (18 : 3)^10 = 6^10`
`27^5 : 81^3 = 27^5 : 27^4 = 27^(5 - 4) = 27^1`
`b ) 10^6 : 100 = 10^6 : 10^2 = 10^( 6 - 2) = 10^4`
`5^9 : 25^3 = 5^9 : 5^6 = 5^(9 - 6) = 5^3`
`4^10 : 64^3 = 4^10 : 4^9 = 4^(10 - 9) = 4^1`
`2^25 : 32^4 = 2^25 : 2^15 = 2^(25 - 15) = 2^10`
`18^4 : 9^4 = (18 : 9)^4 = 2^4`
`#dtkc`
